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Add a lsr common loop invariant hoisting test case

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26827 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-03-17 19:45:54 +00:00
parent d05c223653
commit a3dc22f2d8
1 changed files with 28 additions and 0 deletions
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28
test/CodeGen/X86/loop-strength-reduce.ll Normal file
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; RUN: llvm-as < %s | llc -march=x86 -enable-x86-lsr | grep 'A(' | wc -l | grep 1
;
; Make sure the common loop invariant _A(reg) is hoisted up to preheader.
%A = internal global [16 x [16 x int]] zeroinitializer, align 32
void %test(int %row, int %N) {
entry:
%N = cast int %N to uint
%tmp5 = setgt int %N, 0
br bool %tmp5, label %cond_true, label %return
cond_true:
%indvar = phi uint [ 0, %entry ], [ %indvar.next, %cond_true ]
%i.0.0 = cast uint %indvar to int
%tmp2 = add int %i.0.0, 1
%tmp = getelementptr [16 x [16 x int]]* %A, int 0, int %row, int %tmp2
store int 4, int* %tmp
%tmp5 = add int %i.0.0, 2
%tmp7 = getelementptr [16 x [16 x int]]* %A, int 0, int %row, int %tmp5
store int 5, int* %tmp7
%indvar.next = add uint %indvar, 1
%exitcond = seteq uint %indvar.next, %N
br bool %exitcond, label %return, label %cond_true
return:
ret void
}